A modular and open source glacier model

OGGM is an open source modelling framework designed to simulate the past and future mass balance, volume, and geometry of all glaciers worldwide.

The model framework features several glacier evolution models, including an flowline ice dynamics module accounting for frontal ablation, and several mass-balance models, including a pre-calibrated temperature-index model.

OGGM is above all a modular platform that supports novel modelling workflows, encouraging researchers to create unique model chains for their research. Our framework is designed to be flexible and adaptable, making it an ideal tool for a wide range of applications in glaciology and related fields.

This webpage is for the software documentation for version 1.6.x (unreleased):

• check-out Version history to read about the updates in this version

• check-out docs.oggm.org/en/stable for the stable version

• visit oggm.org for general news

• visit tutorials.oggm.org for the interactive tutorials

• visit edu.oggm.org for the educational platform

A note for new users

OGGM is well established and well documented, but it is a complex model requiring background knowledge in glacier modelling and programming. In our experience, many research projects can actually be completed without running OGGM yourself: we provide a range of pre-computed glacier change projections covering a wide range of scenarios and use cases. Checkout OGGM global glacier projections and see if this fits your needs before diving into the model itself.

Video presentation

If you are new to OGGM and would like a short introduction, here is a 15’ presentation from April 2020:

Disclaimer: If you don’t have access to youtube from your location, you won’t be able to see this video. Slides available here

Overview

Core principles and structure of the OGGM modelling framework.

• Introduction

• Model structure and fundamentals

• Glacier flowlines

• Mass balance models

• Geometry evolution models

• Bed inversion

• Frontal ablation

• Dynamic spinup

• Version history

Using OGGM

How to use the model, with concrete code examples and links to the tutorials.

• Try OGGM online

• Installing OGGM

• Getting started

• Tutorials

• List of OGGM functions

• Performance, cluster environments and reproducibility

• FAQ and Troubleshooting

Datasets and downloads

All the things that OGGM has on offer.

• OGGM Shop

• Climate data

• Reference mass balance data

• RGI-TOPO (New! also for RGI 7.0)

• OGGM global glacier projections

• Other datasets

Contributing

Do you want to contribute to the model? This is the right place to start.

• Citing OGGM

• Adding an external module to OGGM

• Contributing to OGGM

Get in touch

• View the source code on GitHub.

• Report bugs or share your ideas on the issue tracker, and improve the model by submitting a pull request.

• Chat with us on Slack! (just send us an e-mail so we can add you)

• Participate to our regular meeting. (reach out if you want to join in)

• Or you can always send us an e-mail the good old way.

License and citation

OGGM is available under the open source 3-Clause BSD License.

OGGM is a free software. This implies that you are free to use the model and copy, modify or redistribute its code at your wish, under certain conditions:

1. When using this software, please acknowledge the original authors of this contribution by using our logo, referring to our website or using an appropriate citation. See Citing OGGM for how to do that.

2. Redistributions of any substantial portion of the OGGM source code must meet the conditions listed in the OGGM license

3. Neither OGGM e.V. nor the names of OGGM contributors may be used to endorse or promote products derived from this software without specific prior written permission. This does not mean that you need our written permission to work with OGGM or publish results based on OGGM: it simply means that the OGGM developers are not accountable for what you do with the tool (more info).

See the OGGM license for more information.

About

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See the version history for a list of all contributors.